Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidating Balance Sheet (Detail)

v2.4.0.8
Condensed Consolidating Balance Sheet (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Dec. 31, 2012
Current assets:        
Cash and cash equivalents $ 20,335 $ 15,800 $ 12,277 $ 12,245
Receivables:        
Oil and natural gas sales 93,937 96,752    
Joint interest and other 27,588 27,984    
Income tax 3,155 3,120    
Total receivables 124,680 127,856    
Prepaid expenses and other assets 27,015 29,946    
Total current assets 172,030 173,602    
Property and equipment - at cost:        
Oil and natural gas properties and equipment 7,443,733 7,339,097    
Furniture, fixtures and other 21,633 21,431    
Total property and equipment 7,465,366 7,360,528    
Less accumulated depreciation, depletion and amortization 5,202,966 5,084,704    
Net property and equipment 2,262,400 2,275,824    
Restricted deposits for asset retirement obligations 39,961 37,421    
Other assets 20,213 20,455    
Total assets 2,494,604 2,507,302    
Current liabilities:        
Accounts payable 115,344 145,212    
Undistributed oil and natural gas proceeds 38,312 42,107    
Asset retirement obligations 68,679 77,785    
Accrued liabilities 43,698 28,000    
Total current liabilities 266,033 293,104    
Long-term debt, less current maturities 1,193,847 1,205,421    
Asset retirement obligations, less current portion 285,720 276,637    
Deferred income taxes 188,183 178,142    
Other liabilities 13,497 13,388    
Shareholders' equity:        
Common stock 1 1    
Additional paid-in capital 406,752 403,564    
Retained earnings 164,738 161,212    
Treasury stock, at cost (24,167) (24,167)    
Total shareholders’ equity 547,324 540,610    
Total liabilities and shareholders’ equity 2,494,604 2,507,302    
Parent Company
        
Current assets:        
Cash and cash equivalents 20,335 15,800 12,277 12,245
Receivables:        
Oil and natural gas sales 66,314 75,486    
Joint interest and other 27,588 27,984    
Income tax 92,708 124,393    
Total receivables 186,610 227,863    
Prepaid expenses and other assets 21,769 23,674    
Total current assets 228,714 267,337    
Property and equipment - at cost:        
Oil and natural gas properties and equipment 6,624,335 6,770,396    
Furniture, fixtures and other 21,633 21,431    
Total property and equipment 6,645,968 6,791,827    
Less accumulated depreciation, depletion and amortization 4,862,077 4,784,932    
Net property and equipment 1,783,891 2,006,895    
Restricted deposits for asset retirement obligations 39,961 37,421    
Other assets 780,337 574,280    
Total assets 2,832,903 2,885,933    
Current liabilities:        
Accounts payable 113,459 144,492    
Undistributed oil and natural gas proceeds 37,968 41,735    
Asset retirement obligations 66,080 75,977    
Accrued liabilities   28,000    
Total current liabilities 217,507 290,204    
Long-term debt, less current maturities 1,193,847 1,205,421    
Asset retirement obligations, less current portion 210,959 238,270    
Deferred income taxes 130,811 170,419    
Other liabilities 532,455 441,009    
Shareholders' equity:        
Common stock 1 1    
Additional paid-in capital 406,752 403,564    
Retained earnings 164,738 161,212    
Treasury stock, at cost (24,167) (24,167)    
Total shareholders’ equity 547,324 540,610    
Total liabilities and shareholders’ equity 2,832,903 2,885,933    
Guarantor Subsidiaries
        
Receivables:        
Oil and natural gas sales 27,623 21,266    
Total receivables 27,623 21,266    
Prepaid expenses and other assets 5,246 6,272    
Total current assets 32,869 27,538    
Property and equipment - at cost:        
Oil and natural gas properties and equipment 819,398 568,701    
Total property and equipment 819,398 568,701    
Less accumulated depreciation, depletion and amortization 340,889 299,772    
Net property and equipment 478,509 268,929    
Other assets 518,958 427,619    
Total assets 1,030,336 724,086    
Current liabilities:        
Accounts payable 1,885 720    
Undistributed oil and natural gas proceeds 344 372    
Asset retirement obligations 2,599 1,808    
Accrued liabilities 133,251 121,273    
Total current liabilities 138,079 124,173    
Asset retirement obligations, less current portion 74,761 38,367    
Deferred income taxes 57,372 7,723    
Shareholders' equity:        
Additional paid-in capital 509,326 317,776    
Retained earnings 250,798 236,047    
Total shareholders’ equity 760,124 553,823    
Total liabilities and shareholders’ equity 1,030,336 724,086    
Eliminations
        
Receivables:        
Income tax (89,553) (121,273)    
Total receivables (89,553) (121,273)    
Total current assets (89,553) (121,273)    
Property and equipment - at cost:        
Other assets (1,279,082) (981,444)    
Total assets (1,368,635) (1,102,717)    
Current liabilities:        
Accrued liabilities (89,553) (121,273)    
Total current liabilities (89,553) (121,273)    
Other liabilities (518,958) (427,621)    
Shareholders' equity:        
Additional paid-in capital (509,326) (317,776)    
Retained earnings (250,798) (236,047)    
Total shareholders’ equity (760,124) (553,823)    
Total liabilities and shareholders’ equity $ (1,368,635) $ (1,102,717)